Abstract
The knowledge of the freight trips attracted by a commercial area allows understanding the requirements of urban freight transportation and proposing initiatives to enhance its distribution. Commercial areas in developing countries usually include informal trade activities, which are not specifically considered when estimating Freight Trip Attraction (FTA). This paper describes a procedure for estimating FTA, based on sampling, and applies it to a commercial area in Mexico City. The procedure considers employment as explanatory variable, for both formal and informal establishments with three industrial sectors. The results emphasize the importance of including informal establishments in FTA estimations. An underestimation of FTA equal to 27% is obtained if informal trade is not taken into account, for the study area. For improving the estimates, additional explanatory variables must be considered.
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